UG-2020-27
EVAL-M1-IM828-A user guide
Modular application design kit (MADK) of IM828-XCC
About this document
Scope and purpose
This user guide provides an overview of the evaluation board EVAL-M1-IM828-A including its main features, key
data, pin assignments and mechanical dimensions.
EVAL-M1-IM828-A is a power evaluation board from the MADK including M1 connector and one CIPOS™ Maxi
1200 V three-phase module for motor drive applications. In combination with either EVAL-M1-101T or other
control boards with compatible M1 connectors, it features and demonstrates Infineon’s CIPOS™ Maxi IPM
technology for motor drives.
The evaluation board EVAL-M1-IM828-A was developed to support customers during their first steps designing
applications with IM828-XCC CIPOS™ Maxi power modules.
Intended audience
This user guide is intended for all technical specialists who know motor control, middle- and low-power
electronics converters. The board is intended to be used under laboratory conditions.
Evaluation Board
This board will be used during design-in, for evaluation and measurement of characteristics, and proof of data
sheet specifications.
Note:
PCB and auxiliary circuits are NOT optimized for final customer design.
User guide
www.infineon.com
Please read the Important notice and the Safety precautions and the Warnings
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Important notice
Important notice
“Evaluation Boards and Reference Boards” shall mean products embedded on a printed circuit board
(PCB) for demonstration and/or evaluation purposes, which include, without limitation, demonstration,
reference and evaluation boards, kits and design (collectively referred to as “Reference Board”).
Environmental conditions have been considered in the design of the Evaluation Boards and Reference
Boards provided by Infineon Technologies. The design of the Evaluation Boards and Reference Boards
has been tested by Infineon Technologies only as described in this document. The design is not qualified
in terms of safety requirements, manufacturing and operation over the entire operating temperature
range or lifetime.
The Evaluation Boards and Reference Boards provided by Infineon Technologies are subject to functional
testing only under typical load conditions. Evaluation Boards and Reference Boards are not subject to the
same procedures as regular products regarding returned material analysis (RMA), process change
notification (PCN) and product discontinuation (PD).
Evaluation Boards and Reference Boards are not commercialized products, and are solely intended for
evaluation and testing purposes. In particular, they shall not be used for reliability testing or production.
The Evaluation Boards and Reference Boards may therefore not comply with CE or similar standards
(including but not limited to the EMC Directive 2004/EC/108 and the EMC Act) and may not fulfill other
requirements of the country in which they are operated by the customer. The customer shall ensure that
all Evaluation Boards and Reference Boards will be handled in a way which is compliant with the relevant
requirements and standards of the country in which they are operated.
The Evaluation Boards and Reference Boards as well as the information provided in this document are
addressed only to qualified and skilled technical staff, for laboratory usage, and shall be used and
managed according to the terms and conditions set forth in this document and in other related
documentation supplied with the respective Evaluation Board or Reference Board.
It is the responsibility of the customer’s technical departments to evaluate the suitability of the
Evaluation Boards and Reference Boards for the intended application, and to evaluate the completeness
and correctness of the information provided in this document with respect to such application.
The customer is obliged to ensure that the use of the Evaluation Boards and Reference Boards does not
cause any harm to persons or third party property.
The Evaluation Boards and Reference Boards and any information in this document is provided "as is"
and Infineon Technologies disclaims any warranties, express or implied, including but not limited to
warranties of non-infringement of third party rights and implied warranties of fitness for any purpose, or
for merchantability.
Infineon Technologies shall not be responsible for any damages resulting from the use of the Evaluation
Boards and Reference Boards and/or from any information provided in this document. The customer is
obliged to defend, indemnify and hold Infineon Technologies harmless from and against any claims or
damages arising out of or resulting from any use thereof.
Infineon Technologies reserves the right to modify this document and/or any information provided
herein at any time without further notice.
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Safety precautions
Safety precautions
Note:
Please note the following warnings regarding the hazards associated with development systems.
Table 1
Safety precautions
Warning: The DC link potential of this board is up to 800 VDC. When measuring voltage
waveforms by oscilloscope, high voltage differential probes must be used. Failure to do
so may result in personal injury or death.
Warning: The evaluation board contains DC bus capacitors which take time to
discharge after removal of the main supply. Before working on the drive system, wait
five minutes for capacitors to discharge to safe voltage levels. Failure to do so may
result in personal injury or death. Darkened display LEDs are not an indication that
capacitors have discharged to safe voltage levels.
Warning: The evaluation board is connected to the grid input during testing. Hence,
high-voltage differential probes must be used when measuring voltage waveforms by
oscilloscope. Failure to do so may result in personal injury or death. Darkened display
LEDs are not an indication that capacitors have discharged to safe voltage levels.
Warning: Remove or disconnect power from the drive before you disconnect or
reconnect wires, or perform maintenance work. Wait five minutes after removing
power to discharge the bus capacitors. Do not attempt to service the drive until the bus
capacitors have discharged to zero. Failure to do so may result in personal injury or
death.
Caution: The heat sink and device surfaces of the evaluation or reference board may
become hot during testing. Hence, necessary precautions are required while handling
the board. Failure to comply may cause injury.
Caution: Only personnel familiar with the drive, power electronics and associated
machinery should plan, install, commission and subsequently service the system.
Failure to comply may result in personal injury and/or equipment damage.
Caution: The evaluation board contains parts and assemblies sensitive to
electrostatic discharge (ESD). Electrostatic control precautions are required when
installing, testing, servicing or repairing the assembly. Component damage may result
if ESD control procedures are not followed. If you are not familiar with electrostatic
control procedures, refer to the applicable ESD protection handbooks and guidelines.
Caution: A drive that is incorrectly applied or installed can lead to component damage
or reduction in product lifetime. Wiring or application errors such as undersizing the
motor, supplying an incorrect or inadequate AC supply, or excessive ambient
temperatures may result in system malfunction.
Caution: The evaluation board is shipped with packing materials that need to be
removed prior to installation. Failure to remove all packing materials that are
unnecessary for system installation may result in overheating or abnormal operating
conditions.
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Table of contents
Table of contents
About this document ....................................................................................................................... 1
Important notice ............................................................................................................................ 2
Safety precautions.......................................................................................................................... 3
Table of contents ............................................................................................................................ 4
1
1.1
1.2
1.3
1.4
The board at a glance .............................................................................................................. 5
Delivery content ...................................................................................................................................... 5
Block diagram.......................................................................................................................................... 5
Main features ........................................................................................................................................... 6
Board parameters and technical data .................................................................................................... 6
2
System and functional description ........................................................................................... 8
2.1
Getting started with EVAL-M1-IM828-A ................................................................................................... 8
2.1.1
iMOTION™ control board ................................................................................................................... 8
2.1.2
iMOTION™ development tools and software .................................................................................... 9
2.1.3
MCEWizard setup overview ................................................................................................................ 9
2.1.4
MCEDesigner setup overview........................................................................................................... 11
2.2
The current waveform from MCEDesigner ........................................................................................... 13
2.3
Description of the functional blocks..................................................................................................... 15
2.3.1
Overview of IM828-XCC .................................................................................................................... 15
2.3.2
Overview of IMBF170R1K0M1 .......................................................................................................... 16
3
System design.......................................................................................................................18
3.1
Inverter section using CIPOS™ Maxi...................................................................................................... 18
3.2
DC/DC ..................................................................................................................................................... 18
3.3
AC/DC input and soft start .................................................................................................................... 20
3.4
DC-link voltage measurement .............................................................................................................. 20
3.5
Current sensing and amplifier .............................................................................................................. 21
3.6
Current feedback to the control board................................................................................................. 21
3.7
ITRIP and GK setup ................................................................................................................................ 24
3.7.1
ITRIP setup........................................................................................................................................ 24
3.7.2
PWM shut down and GK output ....................................................................................................... 24
3.8
NTC thermistor characteristics and over-heat protection calculation ............................................... 25
3.9
Layout .................................................................................................................................................... 28
3.10
Bill of material ....................................................................................................................................... 31
3.11
Connector details .................................................................................................................................. 32
4
4.1
4.2
4.3
4.4
System performance .............................................................................................................34
Type output waveform at 3-phase AC380 V input ................................................................................ 34
Test results for over-current protection ............................................................................................... 35
Tcmaxi vs Iout at different PWM frequencies ............................................................................................. 35
IM828-XCC’s efficiency........................................................................................................................... 36
5
5.1
5.2
5.3
References and appendices ....................................................................................................37
Abbreviations and definitions............................................................................................................... 37
References ............................................................................................................................................. 37
Additional information.......................................................................................................................... 37
Revision history.............................................................................................................................38
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The board at a glance
1
The board at a glance
The EVAL-M1-IM828-A evaluation board is a part of the iMOTION™ MADK for motor control (iMOTION™ MADK).
The MADK platform is intended for use in various power stages with different control boards. These boards can
easily be interfaced through the 20-pin iMOTION™ MADK-M1 interface connector.
This evaluation board is designed to give comprehensible solution for the power section featuring by CIPOS™
IPM. It provides a DC input and 3-phase output for power motor. It contains a single shunt for current sensing
and a voltage divider for DC-link voltage measurement.
The EVAL-M1-IM828-A evaluation board is available from Infineon. The features of this board are described in
the design feature chapter of this document (UG-2020-27), whereas the remaining paragraphs provide
information to enable the customers to copy, modify and qualify the design for production according to their
own specific requirements.
The evaluation boards are not subject to the same procedures as regular products regarding returned material
analysis (RMA), process change notification (PCN) and product discontinuation (PD). Evaluation boards are
intended to be used under laboratory conditions by technical specialists only.
1.1
Delivery content
The EVAL-M1-IM828-A evaluation board is designed to provide an ease-of-use power stage based on the
Infineon's CIPOS™ Maxi intelligent power module (IM828-XCC IPM).
The delivery includes the finished board as shown in Figure 1 and Figure 2. It provides a 3-phase AC connector,
an EMI filter and soft power-up circuit, input rectifier, DC bus capacitors and 3-phase output for connecting the
motor.
It also contains quasi-resonant PWM controller and CoolSiCTM MOSFET based aux power supply to provide 15 V
& 3.3 V, a single shunt for current sensing and over-current protection, and a voltage divider for DC-link voltage
measurement. The board shown here can be operated directly with the required power supply without the
need for additional components.
1.2
Block diagram
The block diagram of the EVAL-M1-IM828-A is depicted in Figure 1.
Figure 1
User guide
Block diagram of the EVAL-M1-IM828-A
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The board at a glance
Figure 2 points out the functional groups on the top side of the EVAL-M1-IM828-A design.
Figure 2
1.3
Functional groups of the EVAL-M1-IM828-A reference design
Main features
The evaluation board characteristics include:
Nominal input voltage 3-phase 380 V AC
Design for 8 kW motor power output
On-board EMI filter
Single shunt for current sensing
Sensing of DC-link voltage
Measurement test points compatible to standard oscilloscope probes
PCB size is 140 mm x 151 mm, two layers with 70 µm copper each
RoHS compliant
1.4
Board parameters and technical data
Table 2 depicts the important specifications of the evaluation board EVAL-M1-IM828-A.
Table 2
Parameter
EVAL-M1-IM828-A board specifications
Symbol Conditions / comments
Value
Unit
Input voltage
VAC
Optimized design for 3-phase 380 VAC or
DC input.
Lower AC input, less motor power output
320~480 Vrms AC
/420~720 V DC
V
Input current
IAC(max)
Input 3-phase AC 380 Vrms, 8 kW output,
Ta=25C
20
Arms
Input
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The board at a glance
Parameter
Symbol Conditions / comments
Value
Unit
Power (3 phases)
Pin(max)
Input AC 380 V, FPWM=6 kHz, Ta=25°C, Tcase=
100°C
8000
W
Current per phase
Imtr(max)
Input AC 380 VAC, FPWM=6 kHz, Ta=25°C,
Tcase= 100°C
15 Arms/19 Arms (low
1
speed)
Arms
Maximum DC bus voltage
VDC(max)
DC bus capacitors are 450 V, 470µF X2 X2
780
V
Minimum DC bus voltage
VDC(min)
Aux power supply’s brown-in voltage
150
V
Rsh
Two piece of 10 mΩ shunts in parallel
5
mΩ
Motor current protection
trigger level 1
Itrip1
Wizard setup for OC trigger level, related
to shunt resistor RS1 & RS2 and current
sensing bias
27 2
Apeak
Motor current protection
trigger level 2
Itrip2
Hardware comparator over-current
protection, related to shunt resistor and
LM393’s setup
27
Apeak
Thermal protection level
Tprotection
Users need to consider the temperature
gap by NTC sensor; it is recommended to
set temperature at 105°C or less
100
°C
Used for IPM, 12 V fan and relay (K1) drive
15 ± 5%
V
300
mA
3.3 ± 5%
V
150
mA
140×151×72
mm
0 ~ 50
°C
Output
DC bus voltage
Current feedback
Shunt resistance
Protections
Auxiliary power supply 1 – 15 V
Output voltage
Vout1
Maximum output current
Iout1
Auxiliary power supply 2 – 3.3 V
Output voltage
Vout2
Maximum output current
Iout2
Used for IMC controller and protection
circuits
PCB characteristics
Dimension
Length × width × height
Material
FR4, 1.6 mm thickness, 2 oz. PCB
System environment
Ambient temperature
Ta
Non-condensing, maximum RH of 75%
Note:
1.
2.
As IPM and rectifier bridge are mounted on the same heat sink, IPM output capability is impacted by rectifier
bridge’s power loss.
For iMOTION™ IC IMCxxx, there are three types of Gatekill input source options in MCEWizard setup: Gatekill-pin,
Comparator and Both. If you select “comparator” mode, the external Gatekill signal will be not used, and the
signal I_Shunt will be compared by the internal comparator with the “Device over-current trigger level setting”
value set in MCEWizard.
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System and functional description
2
System and functional description
2.1
Getting started with EVAL-M1-IM828-A
In order to run the motor system, a combination of the iMOTION™ MADK power board (EVAL-M1-IM828-A) and
the matching MADK control board (EVAL-M1-101T or other control board) are required. This chapter provides
more details on setting up the system and getting started with the iMOTION™ MADK development platform.
The EVAL-M1-IM828-A reference designs are tested with EVAL-M1-101T controller boards, which shipped with
embedded firmware and default parameters.
Figure 3 shows the basic system connection using EVAL-M1-IM828-A to run an 8 kW GK6081-6AC31 motor with
MCEDesigner.
Figure 3
System connection example
2.1.1
iMOTION™ control board
1. If you want to use the Infineon control board, please go to the Infineon website, www.infineon.com/MADK,
and order EVAL-M1-101T.
2. Then get the latest “IMC101T-T038 MCE Software Package” available on the website,
www.infineon.com/imotion-software
3. After you have obtained the control board and software, you are ready to connect your PC to EVAL-M1-101T
via USB cable, and to program and tune the control board.
4. Connect EVAL-M1-101T’s M1 20-pin interface connector (J2) to power board (for example EVAL-M1-IM828-A,
see Figure 5).
5. Use MCEWizard to enter the target motor’s system and operating parameters, as well as the evaluation
board’s hardware parameters, which will then be used to calculate the controller’s set digital parameters
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System and functional description
representing the complete motor drive system. First click the “Calculate” button on the “Verify & Save Page”
and then save the drive parameter set into your project directory by clicking “Export to Designer file (.txt)”.
The saved drive system parameter file will be later used by the MCEDesigner. Refer to Chapter 2.1.4 or
MCEWizard user guide for more details.
6. Connect motor phase outputs to the motor.
7. Connect 3-phase AC 380 V or DC power to power input connector and power-on system.
8. Start MCEDesigner tool and open MCEDesigner default configuration file (.irc) for IMC101T-T038 controller
(IMC101T_Vxxx.irc) by clicking “File” > “Open”. IMC101T_Vxxx.irc file is included in the “IMC101T-T038 MCE
Software Package” downloaded in step 2.
9. MCEDesigner should automatically connect to the EVAL-M1-101T control board using default COM port
(indicated by green circle next to “COMx Up” status in the bottom frame of the MCEDesigner GUI). If it
cannot establish the connection, change the COM port as follows: (“System” window active) > Preferences >
Connection > Connect using (select one of the other available COM ports from the drop-down menu).
10. Use the following steps to program the system parameters into the internal SRAM of iMOTION™ IC: Click
“Tools” > “Programmer” and select “Program Parameters.” Browse and select the System Drive
Parameters .txt file created in step 5. See Chapter 2.1.4 for more details.
11. Start the motor by clicking the green traffic light button in the control bar.
12. Stop the motor by clicking the red traffic light button in the control bar.
2.1.2
iMOTION™ development tools and software
The iMOTION™ development tool installers for MCEDesigner and MCEWizard are available for download via
Infineon iMOTIONTM website (http://www.infineon.com/imotion-software). All supported tools and software
variants are listed there. Please visit this page periodically to check for tool/software updates.
The isolated on-board debugger provides the USB-to-UART bridge between the PC and the target iMOTION™
device with 1 kV DC galvanic isolation between the motor drive system (hot side) and the PC/debugger (cold)
side. The on-board debugger uses the SEGGER J-Link driver for UART communication with IMC101T-T038. The
J-Link driver will be installed during the MCEDesigner installation. In case the driver is not installed properly,
please go to the SEGGER J-Link website to download and install the latest J-Link “Software and Documentation
pack for Windows.”
2.1.3
MCEWizard setup overview
Double-click the shortcut to open the MCEWizard and configure the parameters for evaluation boards or motor.
Figure 4 shows the “Welcome Page” for MCEWizard, where the MADK control board or power board can be
selected from the pull-down list. Infineon continues to release new MADK controller and power boards.
Therefore, it is possible that some of the latest power boards have not been pre-configured in the MCEWizard
tool and cannot be selected from the pull-down menu. In that case, the user should select another power board
(as similar as possible) and follow the MCEWizard setup steps by entering the parameter values that are specific
to the chosen board. Make sure both “I have modified the circuit board” and “Enable advanced question”
checkmarks are selected. Please refer to the Application Note of the corresponding power board for additional
information.
After selecting the MADK control and the power board, start the MCEWizard system setup procedure by clicking
the “Next” button in the right bottom corner as shown in Figure 4.
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System and functional description
Figure 4
Welcome page of MCEWizard
The iMOTION™ MADK system enables users to easily test different combinations of control and power boards
with their motors. Users should be familiar with the system level parameters that are related to the motor used.
There is a very limited number of parameters which are specific to the control board or power board hardware.
Table 3 provides the MCEWizard setup overview for hardware related parameters specific to EVAL-M1-IM828-A
power board. Similar tables will be available in each control board’s Application Note. A combination of this
table and the corresponding table of the control board provides sufficient information to set up the MADKbased motor drive system rapidly.
Table 3
MCEWizard setup overview table
Parameter
Value
Control board selecting
EVAL-M1-101T for example
Power board selecting
EVAL-M1-IM828-A
Motor 1 shunt configuration
Single shunt
Controller supply voltage
+3.3 V
Max DC bus voltage
780 V
DC bus sensing high resistor
5000 kΩ
DC bus sensing low resistor
Refer to the control board’s user guide
NTC temperature shutdown value
Refer to the control board’s user guide
GateSense low-side devices
High is true
GateSense high-side devices
High is true
Motor 1 current input
Calculated in the corresponding section in control
board’s user guide. For current feedback setup, please
see “3.6 Current feedback to control board”.
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After all the MCEWizard questions are answered, the “Verify & Save Page” will be shown as in Figure 5.
Figure 5
Verify and save page of the MCEWizard
Click “Calculate Parameters” button and “Export to Designer File (.txt)” button to save the parameter file which
will be used by the MCEDesigner in the next steps.
2.1.4
MCEDesigner setup overview
After installing MCEDesigner, there is a shortcut for the MCEDesigner on Windows desktop. Double-click the
shortcut to open MCEDesigner and then open “IMC101T_xx.irc” file as shown in Figure 6.
Figure 6
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MCEDesigner main display for EVAL-M1-101T
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Figure 7
“Program IMC controller” pop-up window
After the drive system parameter file has been programmed into the IMC101 controller, and the motor drive
system is powered, the MCEDesigner can be used to start/stop the motor, display motor current traces, change
the motor speed, modify drive parameters and many other functions. Please refer to the MCEDesigner
documentation for more details.
Note:
The on-board debugger section of the EVAL-M1-101T has galvanic isolation from the controller
section and the attached power board. In order to program the parameters or firmware to the
IMC101T-T038 controller, the 3.3 V DC voltage needs to be supplied to the controller section of the
EVAL-M1-101T. This voltage can either be supplied by the power board (MADK power boards are
designed to supply the 3.3 V to the control board via M1 or M3 connector) or by feeding the 3.3 V
voltage to the control board via some of the available 3.3 V access/test points if the power board is
not attached to the EVAL-M1-101T control board.
To program new firmware and the drive system parameters into IMC101T-T038, please click the “Tools” menu
and select “Programmer” in the pull-down list. The pop-up window “Program IMC controller” will show up as
in Figure 8. Click on the “Program Firmware and Parameter” radio button, and select the “Drive System
Parameter” file created using MCEWizard by clicking on the “Browse” button on the row of “Program Parameter
File”, and then select the firmware file by clicking on the “Browse” button in the row of “Program Firmware
File.” Finally, click on the “Start” button to program the parameter file into the IMC101T-T038 IC.
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Figure 8
2.2
Program firmware and parameter in “Program IMC controller” pop-up window
The current waveform from MCEDesigner
MCEDesigner has a parameter trace function for debugging and checking the PCB layout/parameter settings in
the “.irc” window.
Figure 9
Trace function in MCEDesigner window
The trace function shows what the MCE “saw.” The figures below are the motor current waveform at stop and
running status.
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System and functional description
Figure 10
Iu and Iv static noise waveform from MCEDesigner
Figure 11
Iu and Iv waveform @380 V AC input, 18.5 A output current with 6 kHz carrier frequency
This is typical current waveform of a sinusoidal brushless motor driven by the EVAL-M1-IM828-A and EVAL-M1101T with iMOTIONTM software.
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2.3
Description of the functional blocks
The motor inverter of EVAL-M1-IM828-A reference design is implemented by the IM828-XCC module, and the
auxiliary power supply is based on quasi-resonant controller: ICE5QSAG and CoolSiCTM MOSFET
IMBF170R1K0M1.
2.3.1
Overview of IM828-XCC
Figure 12 provides the overview of the IM828-XCC internal electrical schematics. For further information
regarding these CIPOS™ SiC IPMs such as static and dynamic electrical behavior, as well as thermal and
mechanical characteristics, please refer to the datasheet of the IM828-XCC.
P (24)
(1) VS(U)
(2) VB(U)
VB1
HO1
RBS1
VS1
U (23)
(3) VS(V)
(4) VB(V)
VB2
RBS2
HO2
VS2
V (22)
(5) VS(W)
(6) VB(W)
VB3
RBS3
(7) HIN(U)
HIN1
(8) HIN(V)
HIN2
(9) HIN(W)
HIN3
(10) LIN(U)
LIN1
(11) LIN(V)
LIN2
(12) LIN(W)
LIN3
(13) VDD
VDD
(14) RFE
RFE
(15) ITRIP
ITRIP
(16) VSS
VSS
HO3
VS3
W (21)
LO1
NU (20)
LO2
NV (19)
LO3
NW (18)
(17) VTH
Thermistor
Figure 12
IM828-XCC internal electrical schematic
The main features of CIPOSTM Maxi IPM IM828-XCC include:
1200 V CoolSiC™ MOSFETs
Maximum blocking voltage VCES = 1200 V
Maximum output current at 25°C case temperature ID = 35 A
Rugged 1200 V SOI gate driver technology with stability against transient and negative voltage
Allowable negative VS potential up to -11 V for signal transmission at VBS = 15 V
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Modular application design kit (MADK) of IM828-XCC
System and functional description
Integrated bootstrap functionality
Over-current shutdown
Built-in NTC thermistor for temperature monitoring
Under-voltage lockout at all channels
Low side emitter pins accessible
For all phase current monitoring (open emitter)
Cross-conduction prevention
All of 6 switches turn off during protection
Programmable fault clear timing and enable input
Lead-free terminal plating; RoHS compliant
Table 4
Absolute maximum ratings of IM828-XCC
Symbol
Description
Min
Max
Unit
VDS
MOSFET drain-to-source voltage
--
1200
V
ID
DC drain current
TC = 25°C, TJ < 150°C
--
35
A
TC = 80°C, TJ < 150°C
--
20
A
Pd
Maximum power dissipation per MOSFET
--
86
W
TJ (MOSFET &
IC)
Operating junction temperature
-40
150
°C
TS
Storage temperature range
-40
125
°C
VBS
High side floating supply voltage
-1
20
V
VS
High side floating supply offset voltage
--
1200
V
VDD
Module control supply voltage
-1
20
V
VIN
Input voltage ( LIN, HIN, REF )
-1
VDD + 0.3
V
VRRM
Repetitive peak reverse voltage of bootstrap
diode
--
1200
V
2.3.2
Overview of IMBF170R1K0M1
The IMBF170R1K0M1 is Infineon’s CoolSiCTM 1700V SiC Trench MOSFET, offers high performance, high efficiency
and easy to use with DC 120~1000 V full voltage range safe industrial auxiliary power supply for fly-back
topology.
This is the MOSFET package and definition:
Figure 13
User guide
IMBF170R1K0M1 package: PG-TO263-7 and pin definition
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Modular application design kit (MADK) of IM828-XCC
System and functional description
The main features of CoolSiCTM MOSFET IMBF170R1K0M1 include:
1700 V CoolSiC™ MOSFET
Revolutionary semiconductor material - Silicon Carbide
Optimized for fly-back topologies
12 V/0 V gate-source voltage compatible with most fly-back controllers
Very low switching losses
Benchmark gate threshold voltage, VGS(th) = 4.5V
Fully controllable dV/dt for EMI optimization
Table 5
Absolute maximum ratings of IMBF170R1K0M1
Symbol
Description
Value
Unit
VDS
MOSFET drain-to-source voltage
1700
V
ID
DC drain current
TC = 25°C
5.2
A
TC = 100°C
3.7
A
TC = 25°C
68
W
TC = 100°C
34
W
Ptot
Power dissipation,
limited by Tvjmax
ID.pulse
Pulsed drain current, tp limited by Tvjmax, VGS = 12 V
13.3
A
Tvj
Virtual junction temperature
-55 ~ 175
°C
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System design
3
System design
The EVAL-M1-IM828-A board is an optimized design for 3-phase AC 380V major home and industry appliances.
To meet individual customer’s requirements and to make the EVAL-M1-IM828-A reference design a basis for
development or modification, all board design data such as schematics, Gerber and Altium design data can be
found on the Infineon homepage and log in your account to download them.
3.1
Inverter section using CIPOS™ Maxi
The inverter section is implemented using the CIPOS™ Maxi as sketched in Figure 14. This is 3-phase inverter
bridge section with Infineon CoolSiCTM SiC MOSFET and driver inside. RS1/RS2 are single shunt for current
sensing. The three capacitors C10, C11 and C12 are used as bootstrap capacitors to provide the necessary
floating supply voltages VBU, VBV and VBW respectively. C24 is a DC bus snubber for IPM.
Figure 14
3.2
The diagram of the inverter section
DC/DC
Figure 15 depicts the schematic of the power supply available on the EVAL-M1-IM828-A board. The circuit is ZVS
fly-back topology; the input voltage range is 150~780 V DC bus, and the discharge DC bus is go to lower than 60
V in 180 seconds (by K1 and fan) when power is turned off. It includes the ICE5QSAG and CoolSiC™ 1700 V SiC
trench MOSFET used to generate 15 V and 6 V directly from the DC bus. 15 V is connected to the gate drivers
inside the CIPOS™ Maxi IPM, which generates 12 V for K1 and fan. 3.3 V power supply is from DC6 V by linear
regulator IFX25001ME V33. The 3.3 V power supply is used in the over-current comparator circuit. Both 15 V and
3.3 V are also present on the 20-pin interface connector J3.
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EVAL-M1-IM828-A user guide
Modular application design kit (MADK) of IM828-XCC
System design
Figure 15
Figure 16
User guide
DC/DC power supply
Q1 ZVS switching and 15 V/3.3 V output at 430 VAC input
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System design
3.3
AC/DC input and soft start
Figure 17 depicts the schematic of the AC/DC input section. It includes the connector J1, the rectifier (DB), soft
start (R2, K1), a passive EMI filter (C1, C2, L1, L2), a fuse F1 for over-current protection, and DC bus capacitors
(C6, C7, C8, C9).
Figure 17
3.4
The schematic of AC/DC section and soft start circuit
DC-link voltage measurement
Pin 14 of connector J3 provides access to the DC-link voltage.
Figure 18
DC bus sensing
R45 is the safety resistor on the connection port when the connector is open. The DC-bus sensing low-side
resistance is R45//R1 (R1 is on EVAL-M1-101T). It is 1 MΩ//13.3 kΩ = 13.13 kΩ
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System design
3.5
Current sensing and amplifier
EVAL-M1-IM828-A has single shunt sensing by RS1//RS2. The final value of shunt resistance is 5 mΩ. The current
output IU+ goes to J3.
Figure 19
Current sensing and signal amplification
R29 / R33 / R46 / R47 / C25 / C26 / C29 are for low-pass filter (LPF) for EMC noise from shunt resistor. R30 / R32 /
R49 / C41 and U5 consist of a low-noise proportional amplifier. The gain of the amplifier is:
Gain =
The current scaling is:
R49
≈ 13.26
R32 + R33 + R47
=
RS1 × RS2
× Gain = 66.3 mV/A
RS1 + RS2
Static status:
V
The response time:
V =
R27 × 3.3V
= 0.6 V
R27 + R28
T ≈
1
= 0.15 µS
GBW
Gain − 1
R31 is U5 output transmission matching resistor. GBW is the gain bandwidth of U5.
3.6
Current feedback to the control board
The circuit below shows the feedback current signal to the control board. The offset circuit consists of R6 and
3.3 V on the EVAL-M1-101T.
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System design
Figure 20
Current signal transmission between EVAL-M1-IM828-A and EVAL-M1-101T
The attenuation of the current signal from IU+ to J3 (Pin 10 IU+):
α=
Total gain to IU input:
R6
= 0.826
R6 + R21 + R27
ΣG = α × Gain = 10.96
Total current scaling to IU input:
V
Figure 21
User guide
= R16 × ΣG = 54.8 mV/A
Current input scaling setup with MCEWizard
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Modular application design kit (MADK) of IM828-XCC
System design
The current offset to IU input:
V
=
(3.3 V − 0.6 V) × (R21 + R27)
+ 0.6 V = 1.07 V
R6 + R21 + R27
Since control board ADC range is 3.3 V, we have to select the internal gain of control board to “1”.
Figure 22
User guide
Current feedback amplifier gain setup with MCEWizard.
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Modular application design kit (MADK) of IM828-XCC
System design
3.7
ITRIP and GK setup
3.7.1
ITRIP setup
Figure 23
Over-current protection circuit and ITRIP signal
IM828-XCC provides an over-current detection function by connecting the ITRIP input with the MOSFET drain
current feedback. The ITRIP comparator threshold (typ. 0.5 V) is referenced to VSS ground.
The typical over-current threshold (IOCP) is:
0.5 V × (R34 + R48)
−V
R48
IOCP =
= 34 A
V
When the current is higher than 34 A, it will generate a shutdown for all outputs of the gate driver. The
shutdown propagation delay is typically 1 µs.
3.7.2
PWM shut down and GK output
When over-current is detected, the ITRIP voltage is over the threshold value, then C30 will be discharged (GK is
open drain), and GK drops to “0”. This GK sends signal to control board via J3. GK “0” status is continuous for
about 150 µs. After 150 µs, GK becomes open drain and charges C30 via R20. The R20 and C30 time constant is
about 470 µs.Figure 24 shows the ITRIP and GK circuit. Figure 25 shows the over-current protection waveform.
Figure 24
User guide
ITRIP / GK and fault-clear
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Modular application design kit (MADK) of IM828-XCC
System design
Figure 25
3.8
GK and U phase current and voltage waveform in short output on J2
NTC thermistor characteristics and over-heat protection calculation
Figure 26 shows the NTC measurement circuit.
Figure 26
NTC (inside IM828-XCC) connect to EVAL-M1-101T via J3
The NTC is 85 kΩ @ TNTC = 25°C, B-constant = 4092 K:
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System design
Figure 27
NTC temperature curve and table
Table 6
VTH output vs NTC to EVAL-M1-101T:
Temperature (°C)
NTC (kΩ)
VTH (V)
50
29.97
2.839
60
20.51
2.667
70
14.31
2.462
80
10.16
2.231
90
7.345
1.984
100
5.388
1.733
110
4.009
1.490
120
3.024
1.264
125
2.639
1.160
Figure 28 shows curve of VTH vs NTC
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Modular application design kit (MADK) of IM828-XCC
System design
3
2.8
2.6
2.4
VTH ( V )
2.2
2
1.8
1.6
1.4
1.2
1
40
50
60
70
80
90
100
110
120
130
TNTC (℃)
Figure 28
VTH output
Figure 29
IPM temperature shutdown set to 100°C in MCEWizard
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Modular application design kit (MADK) of IM828-XCC
System design
3.9
Layout
This board has two electrical layers with 70 µm copper (2 oz. copper) and dimensions are 140 mm × 151 mm.
The thickness of the PCB board is 1.6 mm. Figure 30 and Figure 31 illustrate the top and bottom layers of the
reference design.
Figure 30
User guide
Top layer
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System design
Figure 31
User guide
Bottom layer
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Modular application design kit (MADK) of IM828-XCC
System design
Figure 32
User guide
Top over layer
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Modular application design kit (MADK) of IM828-XCC
System design
Figure 33
Bottom over layer
3.10
Bill of material
Table 7 shows the major parts of EVAL-M1-IM828-A design.
The complete bill of material is available on the download section of the Infineon homepage. A log-in is
required to download this material.
Table 7
BOM of the most important/critical parts of the evaluation board
S. No.
1
Ref Designator
Description
Manufacturer
Manufacturer P/N
U3
CoolSiC IPM
Infineon
Technologies
IM828-XCC
2
Q1
CoolSiCTM SiC MOSFET 1700 V
Infineon
Technologies
IMBF170R1K0M1
3
U2
Quasi-resonant PWM
controller
Infineon
Technologies
ICE5QSAG
User guide
TM
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System design
4
U1
Low dropout voltage
regulator, 3.3 V output
Infineon
Technologies
IFX25001ME V33
5
C6, C7, C8, C9
Electrolytic capacitor
Wurth Elektronik
861011486024
6
C13
Electrolytic capacitor
Wurth Elektronik
860020474014
7
C15,C45
High endurance radial leaded
aluminum electrolytic
capacitor
Wurth Elektronik
860020474012
8
C16
High endurance radial leaded
aluminum electrolytic
capacitor
Wurth Elektronik
860080374009
9
C23
Miniature aluminum
electrolytic capacitor
Wurth Elektronik
860080472002
10
J1
5-pin
Wurth Elektronik
691210910005
11
J2
Connector
Wurth Elektronik
691250910003
12
J3
Connector
Wurth Elektronik
613020243121
13
L1, L2
WE-CMB HV common mode
Wurth Elektronik
/Sunlord
744830007215/ARCD
C432340A701N2B
14
L3, L4
WE-CMB HV common mode
Wurth Elektronik
744232261
15
TR1
EE20 / 10 / 6
Wurth Elektronik
750344164
3.11
Connector details
General information about the connectors of the EVAL-M1-IM828-A evaluation board is provided in the tables
below. Table 8 includes the details of the 3-phase AC or DC input connector J1. Table 9 provides the details of
the motor side connector J2. Table 10 provides the pin assignments of the iMOTION™ MADK M1 20-pin interface
connector J3. This connector is the interface to the control board.
Table 8
J1- 3-phase AC or DC input connector
Pin #
Pin name
Description
1
EARTH
Earth
2
NC
No connection
3
A
AC/DC input
4
B
AC/DC input
5
C
AC/DC input
Table 9
J2- Motor side connector
Pin #
Pin name
Description
1
U
Connected to motor phase U
2
V
Connected to motor phase V
3
W
Connected to motor phase W
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System design
Table 10
J3- iMOTION™ MADK M1 20-pin interface connector for power board
Pin #
Pin name
Description
1
PWMUH
3.3 V compatible logic input for high-side gate driver-Phase U
2
GND
Ground
3
PWMUL
3.3 V compatible logic input for low-side gate driver-Phase U
4
GND
Ground
5
PWMVH
3.3 V compatible logic input for high-side gate driver-Phase V
6
+3.3 V
3.3 V power supply
7
PWMVL
3.3 V compatible logic input for low-side gate driver-Phase V
8
+3.3 V
3.3 V power supply
9
PWMWH
3.3 V compatible logic input for high-side gate driver-Phase W
10
IU+
Shunt voltage+
11
PWMWL
3.3 V compatible logic input for low-side gate driver-Phase W
12
IU-
Ground
13
GK
Gatekill
14
DCBSENSE
Input, DC bus voltage to AIN1 after 2000 kΩ registers
15
VTH
Input, voltage input of power module’s temperature sense
16
IV+
Open
17
IV-
Open
18
IW+
Open
19
IW-
Open
20
VCC
Defined for 15 V power supply
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Modular application design kit (MADK) of IM828-XCC
System performance
4
System performance
4.1
Type output waveform at 3-phase AC380 V input
Figure 34
IU Output 18.35 A at PWM=6 kHz waveform by DPO4104(oscilloscope) + TCP0030(probe)
Figure 35
IU Output 3.5 A at PWM=6 kHz waveform by DPO4104(oscilloscope) + TCP0030(probe)
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Modular application design kit (MADK) of IM828-XCC
System performance
4.2
Test results for over-current protection
Figure 36 is the EVAL-M1-IM828-A over-current detection function by connecting the ITRIP input with the IM828XCC current feedback, and CoolSiCTM MOSFET short-circuit withstand time is about 1.8 µs. Over current
detection generates a shutdown of outputs of the gate driver if ITRIP pin input is over 525 mV and lasts longer
than 500 ns.
Figure 36
Over-current protection response waveform (CH3: over-current CH4: output voltage)
4.3
Tcmaxi vs Iout at different PWM frequencies
Figure 37 shows the IPM case temperature vs output current with difference PWM carrier frequencies.
Tcmaxi vs output @ different PWM frequency
120
110
Tcmaxi (Ta = 25℃)
100
90
80
70
60
PWM = 6 kHz
50
PWM = 12 kHz
40
PWM = 24 kHz
30
PWM = 40 kHz
20
0
5
10
15
20
25
Output (A)
Figure 37
User guide
IM828-XCC case temperature vs output power current at different PWM frequencies @380
V AC input, Ta=25℃
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Modular application design kit (MADK) of IM828-XCC
System performance
4.4
IM828-XCC’s efficiency
Figure 38 shows the IPM efficiency vs output current at 380 V AC input and 6 kHz carrier frequency
IPM efficiency on board @ AC380 V input AC345 V output PWM = 6 kHz
100
99.8
IPM efficiency（%）
99.6
99.4
99.2
99
98.8
98.6
98.4
98.2
98
0
2
4
6
8
10
12
14
16
18
20
Output current ( A )
Figure 38
User guide
IM828-XCC efficiency vs output current @ 380 V AC input, output 342 V AC, 6 kHz
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Modular application design kit (MADK) of IM828-XCC
References and appendices
5
References and appendices
5.1
Abbreviations and definitions
Table 11
Abbreviations
Abbreviation
Meaning
MADK
Modular application design kit
CE
Conformité européenne
EMI
Electromagnetic interference
UL
Underwriters laboratories
OPA
Operational amplifier
LPF
Low-pass filter
5.2
References
[1] Infineon Technologies AG. Datasheet of Infineon IM828-XCC Datasheet (2020). V2.0 www.infineon.com
[2] Infineon Technologies AG. Datasheet of Infineon IMC101T Datasheet (2020). V1.6 https://infineon.com
5.3
Additional information
The power board is now available for customers in small order quantities. In order to initiate the testing,
customers are advised to order the following items:
Table 12
Ordering information
Part number
Symbol
EVAL-M1-IM828-A
Package
Quantity
Boxed
1
IM828-XCC
U3
DIP 36x23D
1
ICE5QSAG
U2
PG-DSO-8
1
IMBF170R1K0M1
Q1
PG-TO263-7
1
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Revision history
Revision history
Document version
Date of release
Description of changes
V1.0
2020-10-09
First release
User guide
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Trademarks
All referenced product or service names and trademarks are the property of their respective owners.
Edition 2020-10-09
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2020 Infineon Technologies AG.
All Rights Reserved.
Do you have a question about this
document?
Email: erratum@infineon.com
Document reference
UG-2020-27
For further information on the product, technology,
delivery terms and conditions and prices please
contact your nearest Infineon Technologies office
(www.infineon.com).
WARNINGS
Due to technical requirements products may contain
dangerous substances. For information on the types
in question please contact your nearest Infineon
Technologies office.
Except as otherwise explicitly approved by Infineon
Technologies in a written document signed by
authorized
representatives
of
Infineon
Technologies, Infineon Technologies’ products may
not be used in any applications where a failure of the
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